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D. PLANAGAN. SEWING MACHINE.

No. 497,644. Patented May 16, 1893.

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1 NITED STATES PATENT OFFICE.

DENIS FLANAGAN, OF OLAYTON-LE-MOORS, ENGLAND.

SEWING-MACHINE.

SPEGlIFIGATION forming part of Letters Patent No 497,644, dated May 16,1893.

Application filed October 1 1892. Serial No. 447,531- (No model.)

To all whom it may concern.-

Be it known that I, DENIS FLANAGAN, a subject of Her Majesty the Queenof Great Britain,residingat Olayton-le-lvloorsflnthe county ofLancaster, England, have invented certain new and useful Improvements inSewing-Machines, of which the following is a specification. I

My invention relates to certain improvements in sewing machines andconsists of certain novel means for carrying the spool and forming theloop, the improved spool carrier being adapted for ordinary wood bobbinsor reels. I

The construction and operationof my invention will be fully describedhereinafter and the points of novelty particularly pointed out in theclaims.

To clearly explain my invention reference is made to the accompanyingdrawings in which like numerals of reference designate correspondingparts in the several views.

Figure 1 is a side elevation of a sewing machine having myimprovementsapplied thereto part of the shell of the machine being broken away inorder to show the interior. Fig. 2 is an end elevation of Fig. l on anenlarged scale. Fig. 3 is a side elevation of part of a sewing machineshowing one form of take up bar and operating mechanism. Fig. 4 is anendelevation of the feed motion drawn detached and without theadjustable screw elevator. Fig. 5 is a similar view to Fig. 4 but theadjustable screw elevator is shown. Fig. 6 is a side elevation of thespool or bobbin carrier drawn detached in order more clearly to show itsconstruction the side shown being the opposite to that shown in Fig. 1.Fig. 7 is a front elevation of Fig. 6, a short piece of material beingshown under operation and the loop carrier as having taken hold of thethread and commenced to draw the latter round the spool carrier and loopformer in the direction indicated by the dotted line and arrow. Fig. 8is a similar view to Fig. 7 but the loop carrier is shown as havingadvanced and drawn the thread alittle farther.

Fig. 9 is another similar view the loop carrier almost entirely drawn upor tightened by the tension bar after the loop formed by the thread hasengaged with the bottom thread, or thread carried in the spoolcarrierand loop former below the bed plate.- Fig. 11 isa plan of Fig. 6. Fig.12 is a similar view to Fig. 11 with the cap or lid for holding inposition the conical part of the spool carrier removed. Fig. 13 is aplan view of the shell partof the spool carrier drawn detached in ordermore clearly to illustrate its construction. Fig. 14 is a frontelevation of Fig. 13. Figs. 15 and 16 are diagrams showing respectivelyon a large scale two pieces of material stitched together and therelative positions assumed by the two threads when the material isstitched.

At 1 is a hand wheel for operating the machine but it will be obviousthat this wheel may be turned by foot or other power. I

2 is the main shaft driven by the wheel 1 and on one end of this shaft 2is a disk 3 (see Figs. 1 and 2) on which is loosely mounted the link 4the outer end of which is cranked, and forms a clip 5 which partlyincloses the needle bar 6 and is attached thereto by pin 7. Behind thedisk 3 and on the shaft 2 is the boss 8 in the circumference of which isformed the cam groove or race 9.

Mounted on a fulcrum pin 10 outside the" shell or frame of the machineis the take-up bar 11 which consists of a bell crank lever and throughthe short arm ever or barll is fixed the pin 12 the end of which extendsinto the cam groove or race 9.

On the main shaft 2 I form a crank 13 operatinga vertical pitman 14 thelower end of which is attached to a pin situated about the middle of thecrank 15 the latter being carried by the pin 16 fixed in the bracket 17cast to the under side of the bed plate 18. The outer end of the crank15 carries a pin and slide piece 19 and the latter works in the grooveor slide bed 20 in the crank 21 fixed on the bottom shaft 22 the latterbeing carried by the brackets 17 cast to the under side of the bed plate18 of the machine. fect of this action is to give a rockingmotion to theshaft-22. The end of the bottom shaft 22 carries the cranked lever 23 inone arm of which is fixed the loop carrier 24 while the other short arm23 of the same is by link 25 attached to the crank 26 fixed on the shortThe efloo shaft 27 carried in the bracket 28 fixed to the under side ofthe bed plate 18. On the end of the shaft 27is a crank 29 (see Fig. 1)which operates the crank 30 in which is the long slot- 31 (see Fig. 4)and in this slot 31.is received the regulating pin 32 carried in theblock 33 which is adjusted by the screw elevator 34 so that as theregulating pin 32 is moved by the screw elevator nearer to or fartherfrom the center of motion of the crank so will a greater or less amountof motion be imparted to the slotted crank 30. A second pin 35 (seeFigs. 1 and 4) is received in the slot 31 and this pin 35 is fixed tothe sliding serrated feed bar 36 and gives the requisite to and fromotion to said feed bar. When the feed bar 36 moves in a forwarddirection,or in the direction in which the material under operationpasses, it is necessary that the serrations should protrude slightlyabove the bed plate 18 so that the serrations lay hold of the materialand carry it forward in the usual way. To cause the serrations toprotrude at the right time I employ a tappet 37 on the short shaft 27and this tappet 37 acts on one end of a curved lever 38 mounted on afulcrum stud 39 and the other end of the curved lever 38 acts on theserrated end of the feed bar 36 slightly lifting same. Aspring 40 (seeFigs. 4 and 5) causes the feed bar 36 and curved lever 30 to resumetheir normal positions when not acted upon by the tappet 37, the spring40 hearing against the under side of the bed plate 18. The feed bar 36is carried loosely in bearings 41 fixed to the under side of said bedplate 18.

The spool or reel carrier and loop former consists of a cylindricalshell 42 the bottom of which is of the shape of an inverted cone, and atthe top and front of the shell is a V- shaped projection 43. At the backof the shell 42 is a vane 44 which extends to the top of the shell andwhen the latter is in position in a frame the upper end of the vane 44is received in a recess 44 (see Fig. 12) in such frame. The frame ismerely a skeleton and consists of a ring 47 at the top, which ring iscutaway, or an opening 48 left in it and in this opening 48 the end orpoint of the V projection 43 is received. The bottom of the shell 42rests between and on the two guides 49, 49 braced apart by a bent rod 49and a hinged annular ring or cover 50 holds the shell 42 in positionsaid ring or cover 50 being held down on the frame by the spring catch51. The ring 47 of the frame has a sleeve 53 cast to it and this sleeve53 is received on the stud 54 (see Figs. 1, 2 and 11) fixed to the underside of the bed plate 18 and on the stud 54 beneath the sleeve 53 is aspiral spring 55 which allows of the frame 45 and shell 42 beingdepressed until the pin 56 on the sleeve 53 is withdrawn from the hole57 in the flange of the stud 54 or in the bed plate 18 so that the frameand shell 42 can readily be turned round on the stud 54 until the shell42 is directly under a sliding door or opening made in the bed plate 18so that a reel or bobbincan readily be inserted or removed from theinteriorof the shell 42 which is provided with a centralspindle 56 onwhich the reel or bobbin is placed. 58 is the ordinary pressure footheld in the down position by the spring 59 and raised by moving the pin60 up the incline 61 fixed to the shell. of the machine.

The preferred mechanism for operating the take-up bar 11 is shown inFig. 3 where the pin 12 works in the cam race or groove 9* formed in thelug 62 which is fixed on the needle bar 6 by a set screw 62 and as thelatter rises and falls the cam groove or race 9" gives through the pin12 the requisite motion to the take-up bar 11.

At 63 is a switch pressed downwardly in the position shown, by a spring63" (shown in dotted lines) so that when the machine is set in motionand the pin 12 is caused to travel down the groove 9 as it passes fromunder the switch 63 the said spring 63 will turn the switch down uponthe lower side of the groove and thus cause the pin 12 to travel alwaysin the same direction and it will be obvious that in this case the handor other wheel 1 should be always turned in one and the same direction.When apparatus as shown by Figs. 1 and 2 is employed whichever way thehand or other wheel 1 is turned the remaining parts of the machinealways turn in one (the working) direction.

The pin 35 is preferably covered with rubber or other soft material todeaden the noise or rattle caused by the sides of the slot 31 coming incontact therewith.

It will be obvious that ordinary wooden reels or bobbins of any sizeless than the interior of the shell 42 can be employed in connectionwith the machine.

The action is as follows:A reel or bobbin containing-thread marked A iscarried on a spindle 65 on the top of the machine. A second reel orbobbin containing-thread is placed in the reel container 42 and thethread from this reel is marked B. The thread A passes from its reelthrough the guide eye 66 to and round an ordinary tension 67 thencethrough the eye 68 in the take-up bar 11 to and through the eye in theguide 69 and afterward through the eye in the needle 70. The thread Bpasses from its reel out and back again through the slots 71, 71 (seeFig. 6) in the shell 42 (which slots put a little drag on the thread)and out again through the hole 76 in the shell 42. Both threads A and Bare brought to the top of the bed plate either by giving a few turns tothe wheel 1, or by threading. The material 72 to be stitched is thenplaced in position in'the ordinary manner and the wheel 1 is thencontinuously turned. When the needle has passed the thread A through thema terial the hook or loop carrier 24 lays hold of the thread betweenthe eye of the needle and the material under operation (see Fig. 7) thetake-up bar being at its lowest position. Oonsequently the threadbetween the eye of the take-up bar 11 and the eye of the needle 70 isslack. The hook or loop carrier moves rapidly'for the space of rathermore than half a circle (as indicated by dotted lines and arrows) andwhen about half its movement is completed (see Fig. 8) the loop of thethread A is divided and crossed by the V projection 43 owing to thedouble fork formation of the hook 24 which keeps the doubled threadsapart (see Figs. 1 and 8). When the hook 24 has moved to its limit inone direction (see Fig. 9) the thread slips off the same and afterpassing between the guides 49, 49 will be found to be looped round theshell or loop former 42. The take-up bar 11 now ascends (through theaction of the cam 9) and draws up the slack thread and loop the latterbeing passed under and around the thread B (see Figs. 9 and 10) andescaping from the loop former by way of the passage or space 77 betweenthe shell 42 and the annular ring 47 the loop is drawn quite tight, thethread B being tightenedby the drag put upon it.

It will be seen by referring to Fig.15,where two pieces of material areshown (diagram matically) as being stitched together that the thread ispassed through the material and that when the loop is drawn up tight it(the loop) is between the upper and lower mate-- rial the thread Aforming a crossed loop 74 (see Fig. 16) through which the thread Bpasses.

The take up mechanism herein described is not claimed in thisapplication, but is claimed in a separate application entitledimprovements in take-ups for sewing-machines which was filed March 6,1893, and serially numbered 464,860.

The feed mechanism herein described is not claimed in thisapplicatiombutis claimed in a separate application entitled improvementsin feeding devices for sewing-machines which was filed February 24,1893, and serially numbered 463,551.

What I claim in this specification, and desire to secure by LettersPatent of the United States, is-

1. In a sewing'niachine, a spool receptacle having a point to divide theloop of thread,

a frame for holding said spool receptacle consisting of an open annularportion 47, and

guides 49 secured thereto, an open annular cover hinged upon the saidframe, a spring catch for holding the same'down, a sleeve 53 secured tothe said frame, a stud 54 secured to the bed plate upon which the saidsleeve is free to turn, a boss upon the said stud apin upon the saidsleeve and a recess in the boss for the said pin to engage to hold theframe from rotation round the stud, and a spring upon the stud to bearupon the sleeve, and

hold the pin in engagement with the recess,

so that by pressing down upon the said sleeve the spool receptacle maybe swung round to remove the spool, substantially as and for thepurposes described.

2. In a sewing machine, the combination with a spool receptacle having apoint to divide the loop of thread, a frame for holding said spoolreceptacle consisting of an open annular portion 47, and guides 49secured thereto, an open annular cover hinged upon the said frame, aspring catch for holding the same down, a sleeve 53 secured to the saidframe, a stud 54 secured to the bed plate upon which the said sleeve isfree to turn, a bossupon the said stud a pin upon thesaid sleeve 8e anda recess in the boss for the said pin to engage to hold the frame fromrotation round the stud,'and a spring upon the stud to bear upon thesleeve and hold the pin in engage ment with the recess of a looper andmeans for 8 5 DENIS FLANAGAN.

Witnesses:

WALTER BRIERLEY, J. BRIERLEY HOWARD.

